改变画布的颜色 [英] Change color of canvas

问题描述

大家好，

我有一个Canvas，其中包含StackPanel.该面板包含图像，我想更改该图像的路径.

这是我的代码，可以正常工作.但是我的查询是，是否可以在功能循环之外更改该图像的路径?.

Hi All,

I have one Canvas which contain StackPanel. And that panel contains image and i want to change path of that image.

Here is my code which is working fine.But my query is, is it possible to change path of that image out of function loop?.

Load Image(String Name)
{
   panel = new StackPanel();
   panel.Orientation = Orientation.Vertical;
                        
   path = "pack://siteoforigin:,,/cam.jpeg";

   imgLoc = new Uri(path, UriKind.RelativeOrAbsolute);
   imgId = new BitmapImage(imgLoc);
   img = new Image();
   img.Source = imgId;
   img.Width = 15;
   img.Height = 15;
   img.HorizontalAlignment = HorizontalAlignment.Left;
                       
   panel.Children.Add(img);                       
   panel.ToolTip = Name;
   panel.DataContext = Name;

   double Xcoordinatee = (Convert.ToDouble(Xcoordinate) * ImageHolder.ActualWidth);
   double Ycoordinatee = (Convert.ToDouble(Ycoordinate) * ImageHolder.ActualHeight);

   //set camera's x-coordinate
   Canvas.SetLeft(panel, Xcoordinatee);
   //set camera's y-coordinate
   Canvas.SetTop(panel, Ycoordinatee);

   panel.Opacity = 0.85;

   panel.Width = img.Width;
   panel.Height = img.Height;

   //restrict dropped camera image to be in map image area
   if (Xcoordinatee + panel.Width > ImageHolder.Width)
   {
      Canvas.SetLeft(panel, ImageHolder.Width - panel.Width);
   }

   if (Ycoordinatee + panel.Height > ImageHolder.Height)
   {
      Canvas.SetTop(panel, ImageHolder.Height - panel.Height);
   }

   ImageHolder.Children.Add(panel);

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